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toss
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Re: c-types arrived

Actually, the DCF has not been too much destroyed. smile


That's a relief.
I envisioned something much worse.
I haven't got any completed yet so will have to wait to see where my DCF's finish.

Cheers
[Mar 23, 2010 10:25:25 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: c-types arrived

Don't you worry... when running HFCC in between... got them few DDDT2 C types listed as 83 hours a piece i.e. the 1 day cache is practically annihilated on the quad... just not getting anything more until these have their turn.

23/03/2010 11:26:24 World Community Grid [dcf] DCF: 3.540679->3.288101, raw_ratio 1.014898, adj_ratio 0.286639

We shall persevere.
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[Mar 23, 2010 10:37:37 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: c-types arrived

Hmm....I have got a total of 6 c-type WUs with estimated runtimes of approx. 4 days (on the faster machine) and >5 days (on my slow machine)
On the faster machine one WU has already finished after 1.5 hours and a second is running and aiming to the same value. On the slower machine the finishing runtime should be at about 6 hours.

So, when DCFs on all machines get adapted, the result would be buffers that are vastly overcommitted, and as the result from that we will see more WUs missing the deadlines...or am I wrong?
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[Edit 1 times, last edit by Former Member at Mar 23, 2010 11:08:27 AM]
[Mar 23, 2010 11:06:17 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: c-types arrived

It's good trickery to control hoovering... pump up the header fpops ;>)

tluehr, no the high DCF prevents overstocking. They will still complete in 1:30 / few hours, so though clients might enter panic state, work fetch stops and work will be well in time completed.
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[Edit 2 times, last edit by Sekerob at Mar 23, 2010 11:21:49 AM]
[Mar 23, 2010 11:12:33 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: c-types arrived

PS, the few I had were put ahead with the old suspend act and promptly completed in a fraction of the time, taking the DCF down again, but that is slow process. Up goes very fast as a protection measure against overcommitting.

erlc_ a211_ sr89a0_ 0-- Pending Validation 23-3-10 10:25:15 23-3-10 11:12:58 0.74 13.5 / 0.0
erlc_ a211_ sr23a1_ 1-- Pending Validation 23-3-10 10:22:58 23-3-10 11:11:42 0.76 13.8 / 0.0

23/03/2010 12:12:36 World Community Grid Computation for task erlc_a211_sr89a0_0 finished
23/03/2010 12:12:36 World Community Grid [dcf] DCF: 3.255531->3.223281, raw_ratio 0.030547, adj_ratio 0.009383
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[Mar 23, 2010 11:20:43 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: c-types arrived

So, when DCFs on all machines get adapted, the result would be buffers that are vastly overcommitted, and as the result from that we will see more WUs missing the deadlines...or am I wrong?
So, when DCFs on all machines get adapted to these wrong estimates, the result would be buffers that are vastly overcommitted when estimates are corrected back to reality or for other WCG projects, and as the result from that we will see more WUs from other projects missing the deadlines and also when estimates are corrected for DDDT2
Now correct?
But hopefully there are not so many DDDT2-WUs with such a vastly wrong estimate to influence the DCF so badly that this scenario happens to the majority of DDDT2 crunchers. As Sekerob already explained: DCF will go down only slowly, but up very quickly.
Nevertheless something that the techs should take care of before the DCFs go down to much.
[Mar 23, 2010 11:45:10 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: c-types arrived

Was that a question to the partly bolded interpretation... Now correct? Don't think so.

Simply, due the DCF inflation it appears as if there's a fast vast overcommit, but we humans know that the real run time will be much less, thus nothing is getting over deadline. Soon as BOINC realizes it resumes crunching FIFO and when cache matches buffer setting again, resumes fetching work.

There's an Start Here FAQ on ALL Wrong DCF's and TTC's... a self defense mechanism, we long know badly overdue for revision. We've been asking for years.

edit: vast with a v
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[Edit 1 times, last edit by Sekerob at Mar 23, 2010 11:59:51 AM]
[Mar 23, 2010 11:55:37 AM]   Link   Report threatening or abusive post: please login first  Go to top 
JmBoullier
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Re: c-types arrived

tluehr,
There could be a risk of overcommitment only if the techs would suddenly underestimate the C-type WUs as much as they have overestimated them and if you have pushed your cache size to the max in hope of getting more of the overestimated ones.

I trust the techs for not doing this second mistake, and you, on your side, you would not have done this big cache increase, would you? smile

As long as the cache is kept to a reasonable size there is no such risk. What will happen if/when the weight of type C jobs is corrected is that we will slowly get more until their number is in synch with reality.

Cheers. Jean.
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kateiacy
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Re: c-types arrived

Yes!! I got one -- woo hoo!
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[Mar 23, 2010 1:04:48 PM]   Link   Report threatening or abusive post: please login first  Go to top 
mwgiii
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Re: c-types arrived

Bah....I have had very little luck getting any tasks for my 14 cores, a grand total of 3 tasks since this project started, until today.

I have finally been able to get some tasks for my fastest two machines [face_dance], but one has already errored out. Boo!

erlc_a100_pr78a0

Computation for task erlc_a100_pr78a0_0 finished
Output file erlc_a100_pr78a0_0_2 for task erlc_a100_pr78a0_0 absent

<core_client_version>6.10.17</core_client_version>
<![CDATA[
<stderr_txt>
INFO: No state to restore. Start from the beginning.
called boinc_finish

</stderr_txt>
<message>
<file_xfer_error>
<file_name>erlc_a100_pr78a0_0_2</file_name>
<error_code>-161</error_code>
</file_xfer_error>

</message>
]]>

Anything I should be worried about, or is this normal?
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[Mar 23, 2010 1:28:34 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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